ASAP PLZ HELP I NEED HELP 100 POINTS AND BRAINLIEST + SPECIAL PRIZE The acts as the internal clock that controls sleep and waking cycles.
A.
hypothalamus
B.
pineal gland
C.
ovaries
D.
thyroid

Which of the following was the greatest short-term effect of spanish colonization on american indians? a. it sharply decreased their population b. it opened them to european ideas c. it gave them new crops to growd. it led to their disappearance from the americas i would appreciate the : ) i'm stuck between a couple answers